Kidde K10SCO Combination Carbon Monoxide and Smoke Alarm - 10 Year Warranty

Replace your old Kidde 10SCO with the updated and improved Kidde K10SCO, providing smoke and carbon monoxide detection from one space-saving unit. Powered by 2 x AA alkaline batteries, this combined alarm effectively detects smoke with its optical sensor and uses an electrochemical sensor for deadly carbon monoxide, undetectable by all human senses. Featuring voice alerts, the alarm will announce either 'FIRE! FIRE!' or 'WARNING! CARBON MONOXIDE!' depending on which danger has been detected, combined with an alarm beep sequence. Easily replace the batteries from the front battery compartment without having to take the alarm off the ceiling during its 10-year lifespan.